A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Phonon echo in superconducting MgB2
Tekijät: Pleshakov IV, Ylinen E, Paturi P, Matveev VV, Laiho R
Kustantaja: EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
Julkaisuvuosi: 2009
Lehti:: EPL
Tietokannassa oleva lehden nimi: EPL
Lehden akronyymi: EPL-EUROPHYS LETT
Vuosikerta: 85
Numero: 6
Sivujen määrä: 4
ISSN: 0295-5075
DOI: https://doi.org/10.1209/0295-5075/85/67001
Tiivistelmä
The phonon echo excited by radio-frequency pulses in superconducting MgB2 in external magnetic field was studied. Using the echo technique two contributions to ultrasound attenuation are observed: low-temperature relaxation, which depends on the magnetic field, and a decay connected to the superconducting energy gap at temperatures close to T-c. The value of about 7k(B)T(c) for the energy gap was extracted from the experimental data. Copyright (C) EPLA, 2009
The phonon echo excited by radio-frequency pulses in superconducting MgB2 in external magnetic field was studied. Using the echo technique two contributions to ultrasound attenuation are observed: low-temperature relaxation, which depends on the magnetic field, and a decay connected to the superconducting energy gap at temperatures close to T-c. The value of about 7k(B)T(c) for the energy gap was extracted from the experimental data. Copyright (C) EPLA, 2009
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